.aithd-landing {
  --aithd-accent: #6647f5;
  --aithd-accent-soft: rgba(102, 71, 245, 0.18);
  --aithd-line: rgba(255, 255, 255, 0.12);
  --aithd-card: rgba(75, 75, 75, 0.22);
  --aithd-muted: rgba(255, 255, 255, 0.72);
  --aithd-ok: #8de1b3;
  color: #fff;
  padding: 48px 0 80px;
}

.aithd-landing a {
  color: inherit;
}

.aithd-landing__nav {
  position: sticky;
  top: 0;
  z-index: 15;
  margin: 0 -20px 0;
  padding: 0 20px;
  backdrop-filter: blur(16px);
  background: rgba(25, 25, 25, 0.88);
  border-bottom: 1px solid var(--aithd-line);
}

.aithd-landing__nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 64px;
}

.aithd-landing__brand {
  font-family: Roboto-Medium, sans-serif;
  font-size: 18px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.aithd-landing__brand span {
  color: #c9b8ff;
}

.aithd-landing__nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 14px;
  color: var(--aithd-muted);
}

.aithd-landing__nav-links a:hover {
  color: #fff;
}

.aithd-landing__hero {
  padding: 56px 0 40px;
}

.aithd-landing__hero-grid {
  display: grid;
  grid-template-columns: 1.35fr 0.65fr;
  gap: 28px;
  align-items: stretch;
}

.aithd-landing__eyebrow {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  border: 1px solid rgba(102, 71, 245, 0.45);
  border-radius: 999px;
  background: var(--aithd-accent-soft);
  color: #d8ccff;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.aithd-landing__hero h1 {
  margin: 20px 0 16px;
  font-size: clamp(2rem, 4.8vw, 3.6rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
}

.aithd-landing__lead {
  font-size: clamp(1rem, 1.8vw, 1.25rem);
  line-height: 1.5;
  color: var(--aithd-muted);
  max-width: 760px;
}

.aithd-landing__heritage {
  margin-top: 24px;
  padding: 20px 22px;
  border-left: 4px solid var(--aithd-accent);
  border-radius: 0 18px 18px 0;
  background: linear-gradient(90deg, rgba(102, 71, 245, 0.16), rgba(102, 71, 245, 0.04));
  font-size: 17px;
  line-height: 1.6;
}

.aithd-landing__cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.aithd-landing__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 20px;
  border-radius: 47px;
  border: 1px solid var(--aithd-line);
  font-family: Roboto-Medium, sans-serif;
  font-size: 15px;
  text-decoration: none !important;
  transition: transform 0.2s ease, background-color 0.2s ease;
}

.aithd-landing__btn:hover {
  transform: translateY(-2px);
}

.aithd-landing__btn--primary {
  background: var(--aithd-accent);
  border-color: transparent;
  color: #fff !important;
}

.aithd-landing__btn--secondary {
  background: rgba(255, 255, 255, 0.06);
  color: #fff !important;
}

.aithd-landing__hero-card {
  padding: 26px;
  border: 1px solid var(--aithd-line);
  border-radius: 28px;
  background: var(--aithd-card);
  backdrop-filter: blur(100px);
  box-shadow: inset 0 0 70px 0 rgba(255, 255, 255, 0.05);
}

.aithd-landing__hero-card h2 {
  margin: 0 0 8px;
  font-size: 22px;
}

.aithd-landing__stat {
  padding: 16px 0;
  border-bottom: 1px solid var(--aithd-line);
}

.aithd-landing__stat:last-child {
  border-bottom: 0;
}

.aithd-landing__stat b {
  display: block;
  font-size: 18px;
  margin-bottom: 4px;
}

.aithd-landing__stat span {
  color: var(--aithd-muted);
  font-size: 14px;
}

.aithd-landing__section {
  padding: 48px 0;
}

.aithd-landing__kicker {
  color: #b8a8ff;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.aithd-landing__section h2 {
  margin: 8px 0 18px;
  font-size: clamp(1.7rem, 3vw, 2.6rem);
  line-height: 1.1;
}

.aithd-landing__intro {
  max-width: 820px;
  color: var(--aithd-muted);
  font-size: 17px;
  line-height: 1.65;
}

.aithd-landing__grid-2,
.aithd-landing__grid-3 {
  display: grid;
  gap: 18px;
  margin-top: 24px;
}

.aithd-landing__grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.aithd-landing__grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.aithd-landing__card {
  padding: 22px;
  border: 1px solid var(--aithd-line);
  border-radius: 20px;
  background: var(--aithd-card);
}

.aithd-landing__card h3 {
  margin: 0 0 8px;
  font-size: 18px;
}

.aithd-landing__card p {
  margin: 0;
  color: var(--aithd-muted);
  font-size: 16px;
  line-height: 1.55;
}

.aithd-landing__timeline {
  display: grid;
  gap: 12px;
  margin-top: 24px;
}

.aithd-landing__date-row {
  display: grid;
  grid-template-columns: 190px 1fr;
  gap: 18px;
  align-items: center;
  padding: 16px 18px;
  border: 1px solid var(--aithd-line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.04);
}

.aithd-landing__date-pill {
  padding: 8px 10px;
  border-radius: 10px;
  background: var(--aithd-accent);
  color: #fff;
  font-weight: 700;
  text-align: center;
  font-size: 14px;
}

.aithd-landing__topic-list {
  counter-reset: aithd-topic;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 24px;
}

.aithd-landing__topic {
  position: relative;
  padding: 18px 18px 18px 58px;
  border: 1px solid var(--aithd-line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.04);
  font-size: 16px;
  line-height: 1.5;
}

.aithd-landing__topic::before {
  counter-increment: aithd-topic;
  content: counter(aithd-topic);
  position: absolute;
  left: 16px;
  top: 16px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-weight: 700;
  background: var(--aithd-accent-soft);
  color: #d8ccff;
}

.aithd-landing__link-stack {
  display: grid;
  gap: 12px;
  margin-top: 24px;
}

.aithd-landing__link-card {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: center;
  padding: 18px;
  border: 1px solid var(--aithd-line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.04);
  text-decoration: none !important;
}

.aithd-landing__link-card small {
  display: block;
  color: var(--aithd-muted);
  margin-bottom: 4px;
}

.aithd-landing__fee strong {
  display: block;
  margin: 8px 0;
  font-size: 24px;
}

.aithd-landing__fee .aithd-landing__free {
  color: var(--aithd-ok);
}

.aithd-landing__note {
  margin-top: 20px;
  padding: 18px 20px;
  border: 1px solid rgba(102, 71, 245, 0.35);
  border-radius: 16px;
  background: rgba(102, 71, 245, 0.1);
  color: #e8e0ff;
  line-height: 1.6;
}

.aithd-landing__orgs {
  columns: 2;
  column-gap: 36px;
  margin-top: 22px;
  padding-left: 20px;
}

.aithd-landing__orgs li {
  break-inside: avoid;
  margin-bottom: 10px;
  color: var(--aithd-muted);
  font-size: 16px;
  line-height: 1.55;
  list-style-type: disc;
}

.aithd-landing__downloads {
  display: grid;
  gap: 12px;
  margin-top: 20px;
}

.aithd-landing__download {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  width: fit-content;
  padding: 12px 20px;
  border-radius: 47px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--aithd-line);
  color: #fff !important;
  text-decoration: none !important;
}

.aithd-landing__download:hover {
  background: var(--aithd-accent-soft);
}

.aithd-landing__gallery {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 24px;
}

.aithd-landing__gallery img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 16px;
  border: 1px solid var(--aithd-line);
}

.aithd-landing__contact-card {
  text-decoration: none !important;
}

@media only screen and (max-width: 1100px) {
  .aithd-landing__hero-grid,
  .aithd-landing__grid-2,
  .aithd-landing__grid-3,
  .aithd-landing__topic-list {
    grid-template-columns: 1fr;
  }

  .aithd-landing__gallery {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .aithd-landing__nav-links {
    display: none;
  }
}

@media only screen and (max-width: 640px) {
  .aithd-landing__hero {
    padding-top: 32px;
  }

  .aithd-landing__date-row {
    grid-template-columns: 1fr;
  }

  .aithd-landing__gallery {
    grid-template-columns: 1fr;
  }

  .aithd-landing__orgs {
    columns: 1;
  }

  .aithd-landing__link-card {
    flex-direction: column;
    align-items: flex-start;
  }
}